Add implicitdisp to ZydisOperandDefinition

zyantific · Jun 20, 2024 · 2c366f5 · 2c366f5
1 parent 5a68f63
commit 2c366f5
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Showing 3 changed files with 141 additions and 136 deletions.
diff --git a/include/Zydis/Internal/SharedData.h b/include/Zydis/Internal/SharedData.h
@@ -240,6 +240,7 @@ typedef struct ZydisOperandDefinition_
         } reg;
         struct
         {
+            ZyanU8 implicitdisp            ZYAN_BITFIELD(1);
             ZyanU8 seg                     ZYAN_BITFIELD(3);
             ZyanU8 base                    ZYAN_BITFIELD(ZYDIS_IMPLMEM_BASE_REQUIRED_BITS);
         } mem;

diff --git a/src/Decoder.c b/src/Decoder.c
@@ -1586,6 +1586,10 @@ static void ZydisDecodeOperandImplicitMemory(const ZydisDecoder* decoder,
             ZydisRegisterEncode(ZYDIS_REGCLASS_SEGMENT, definition->op.mem.seg - 1);
         ZYAN_ASSERT(operand->mem.segment);
     }
+    if (definition->op.mem.implicitdisp)
+    {
+        operand->mem.disp.value = -(definition->size[context->eosz_index]);
+    }
 }
 #endif